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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-08-26 17:15:47 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-26 10:31:42 -0600 |
| commit | dfb58b1796d19c8405a38eb457f97669440c59d4 (patch) | |
| tree | 2eb07c0a8818e7c181983fb952ba6c4934a247ef /io_uring/Makefile | |
| parent | 581711c46612c1fd7f98960f9ad53f04fdb89853 (diff) | |
| download | linux-dfb58b1796d19c8405a38eb457f97669440c59d4.tar.bz2 | |
io_uring/net: fix overexcessive retries
Length parameter of io_sg_from_iter() can be smaller than the iterator's
size, as it's with TCP, so when we set from->count at the end of the
function we truncate the iterator forcing TCP to return preliminary with
a short send. It affects zerocopy sends with large payload sizes and
leads to retries and possible request failures.
Fixes: 3ff1a0d395c00 ("io_uring: enable managed frags with register buffers")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0bc0d5179c665b4ef5c328377c84c7a1f298467e.1661530037.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/Makefile')
0 files changed, 0 insertions, 0 deletions